<script lang="ts">
	import { toast } from 'svelte-sonner';
	import fileSaver from 'file-saver';
	const { saveAs } = fileSaver;

	import dayjs from 'dayjs';
	import relativeTime from 'dayjs/plugin/relativeTime';
	dayjs.extend(relativeTime);

	import { onMount, getContext } from 'svelte';
	const i18n = getContext('i18n');

	import { deleteFeedbackById, exportAllFeedbacks, getFeedbackItems } from '$lib/apis/evaluations';

	import Tooltip from '$lib/components/common/Tooltip.svelte';
	import Download from '$lib/components/icons/Download.svelte';
	import Badge from '$lib/components/common/Badge.svelte';
	import CloudArrowUp from '$lib/components/icons/CloudArrowUp.svelte';
	import Pagination from '$lib/components/common/Pagination.svelte';
	import FeedbackMenu from './FeedbackMenu.svelte';
	import FeedbackModal from './FeedbackModal.svelte';
	import EllipsisHorizontal from '$lib/components/icons/EllipsisHorizontal.svelte';

	import ChevronUp from '$lib/components/icons/ChevronUp.svelte';
	import ChevronDown from '$lib/components/icons/ChevronDown.svelte';
	import { WEBUI_API_BASE_URL, WEBUI_BASE_URL } from '$lib/constants';
	import { config } from '$lib/stores';
	import Spinner from '$lib/components/common/Spinner.svelte';

	let page = 1;
	let items = null;
	let total = null;

	let orderBy: string = 'updated_at';
	let direction: 'asc' | 'desc' = 'desc';

	const setSortKey = (key) => {
		if (orderBy === key) {
			direction = direction === 'asc' ? 'desc' : 'asc';
		} else {
			orderBy = key;
			direction = 'asc';
		}
	};

	let showFeedbackModal = false;
	let selectedFeedback = null;

	const openFeedbackModal = (feedback) => {
		showFeedbackModal = true;
		selectedFeedback = feedback;
	};

	const closeFeedbackModal = () => {
		showFeedbackModal = false;
		selectedFeedback = null;
	};

	//////////////////////
	//
	// CRUD operations
	//
	//////////////////////

	const getFeedbacks = async () => {
		try {
			const res = await getFeedbackItems(localStorage.token, orderBy, direction, page).catch(
				(error) => {
					toast.error(`${error}`);
					return null;
				}
			);

			if (res) {
				items = res.items;
				total = res.total;
			}
		} catch (err) {
			console.error(err);
		}
	};

	$: if (page) {
		getFeedbacks();
	}

	$: if (orderBy && direction) {
		getFeedbacks();
	}

	const deleteFeedbackHandler = async (feedbackId: string) => {
		const response = await deleteFeedbackById(localStorage.token, feedbackId).catch((err) => {
			toast.error(err);
			return null;
		});
		if (response) {
			toast.success($i18n.t('Feedback deleted successfully'));
			page = 1;
			getFeedbacks();
		}
	};

	const shareHandler = async () => {
		toast.success($i18n.t('Redirecting you to Open WebUI Community'));

		// remove snapshot from feedbacks
		const feedbacksToShare = feedbacks.map((f) => {
			const { snapshot, user, ...rest } = f;
			return rest;
		});
		console.log(feedbacksToShare);

		const url = 'https://openwebui.com';
		const tab = await window.open(`${url}/leaderboard`, '_blank');

		// Define the event handler function
		const messageHandler = (event) => {
			if (event.origin !== url) return;
			if (event.data === 'loaded') {
				tab.postMessage(JSON.stringify(feedbacksToShare), '*');

				// Remove the event listener after handling the message
				window.removeEventListener('message', messageHandler);
			}
		};

		window.addEventListener('message', messageHandler, false);
	};

	const exportHandler = async () => {
		const _feedbacks = await exportAllFeedbacks(localStorage.token).catch((err) => {
			toast.error(err);
			return null;
		});

		if (_feedbacks) {
			let blob = new Blob([JSON.stringify(_feedbacks)], {
				type: 'application/json'
			});
			saveAs(blob, `feedback-history-export-${Date.now()}.json`);
		}
	};
</script>

<FeedbackModal bind:show={showFeedbackModal} {selectedFeedback} onClose={closeFeedbackModal} />

{#if items === null || total === null}
	<div class="my-10">
		<Spinner className="size-5" />
	</div>
{:else}
	<div class="mt-0.5 mb-1 gap-1 flex flex-row justify-between">
		<div class="flex items-center md:self-center text-xl font-medium px-0.5 gap-2 shrink-0">
			<div>
				{$i18n.t('Feedback History')}
			</div>

			<div class="text-lg font-medium text-gray-500 dark:text-gray-500">
				{total}
			</div>
		</div>

		{#if total > 0}
			<div>
				<Tooltip content={$i18n.t('Export')}>
					<button
						class=" p-2 rounded-xl hover:bg-gray-100 dark:bg-gray-900 dark:hover:bg-gray-850 transition font-medium text-sm flex items-center space-x-1"
						on:click={() => {
							exportHandler();
						}}
					>
						<Download className="size-3" />
					</button>
				</Tooltip>
			</div>
		{/if}
	</div>

	<div class="scrollbar-hidden relative whitespace-nowrap overflow-x-auto max-w-full">
		{#if (items ?? []).length === 0}
			<div class="text-center text-xs text-gray-500 dark:text-gray-400 py-1">
				{$i18n.t('No feedbacks found')}
			</div>
		{:else}
			<table
				class="w-full text-sm text-left text-gray-500 dark:text-gray-400 table-auto max-w-full"
			>
				<thead class="text-xs text-gray-800 uppercase bg-transparent dark:text-gray-200">
					<tr class=" border-b-[1.5px] border-gray-50 dark:border-gray-850">
						<th
							scope="col"
							class="px-2.5 py-2 cursor-pointer select-none w-3"
							on:click={() => setSortKey('user')}
						>
							<div class="flex gap-1.5 items-center justify-end">
								{$i18n.t('User')}
								{#if orderBy === 'user'}
									<span class="font-normal">
										{#if direction === 'asc'}
											<ChevronUp className="size-2" />
										{:else}
											<ChevronDown className="size-2" />
										{/if}
									</span>
								{:else}
									<span class="invisible">
										<ChevronUp className="size-2" />
									</span>
								{/if}
							</div>
						</th>

						<th
							scope="col"
							class="px-2.5 py-2 cursor-pointer select-none"
							on:click={() => setSortKey('model_id')}
						>
							<div class="flex gap-1.5 items-center">
								{$i18n.t('Models')}
								{#if orderBy === 'model_id'}
									<span class="font-normal">
										{#if direction === 'asc'}
											<ChevronUp className="size-2" />
										{:else}
											<ChevronDown className="size-2" />
										{/if}
									</span>
								{:else}
									<span class="invisible">
										<ChevronUp className="size-2" />
									</span>
								{/if}
							</div>
						</th>

						<th
							scope="col"
							class="px-2.5 py-2 text-right cursor-pointer select-none w-fit"
							on:click={() => setSortKey('rating')}
						>
							<div class="flex gap-1.5 items-center justify-end">
								{$i18n.t('Result')}
								{#if orderBy === 'rating'}
									<span class="font-normal">
										{#if direction === 'asc'}
											<ChevronUp className="size-2" />
										{:else}
											<ChevronDown className="size-2" />
										{/if}
									</span>
								{:else}
									<span class="invisible">
										<ChevronUp className="size-2" />
									</span>
								{/if}
							</div>
						</th>

						<th
							scope="col"
							class="px-2.5 py-2 text-right cursor-pointer select-none w-0"
							on:click={() => setSortKey('updated_at')}
						>
							<div class="flex gap-1.5 items-center justify-end">
								{$i18n.t('Updated At')}
								{#if orderBy === 'updated_at'}
									<span class="font-normal">
										{#if direction === 'asc'}
											<ChevronUp className="size-2" />
										{:else}
											<ChevronDown className="size-2" />
										{/if}
									</span>
								{:else}
									<span class="invisible">
										<ChevronUp className="size-2" />
									</span>
								{/if}
							</div>
						</th>

						<th scope="col" class="px-2.5 py-2 text-right cursor-pointer select-none w-0"> </th>
					</tr>
				</thead>
				<tbody class="">
					{#each items as feedback (feedback.id)}
						<tr
							class="bg-white dark:bg-gray-900 dark:border-gray-850 text-xs cursor-pointer hover:bg-gray-50 dark:hover:bg-gray-850/50 transition"
							on:click={() => openFeedbackModal(feedback)}
						>
							<td class=" py-0.5 text-right font-medium">
								<div class="flex justify-center">
									<Tooltip content={feedback?.user?.name}>
										<div class="shrink-0">
											<img
												src={`${WEBUI_API_BASE_URL}/users/${feedback.user.id}/profile/image`}
												alt={feedback?.user?.name}
												class="size-5 rounded-full object-cover shrink-0"
											/>
										</div>
									</Tooltip>
								</div>
							</td>

							<td class=" py-1 pl-3 flex flex-col">
								<div class="flex flex-col items-start gap-0.5 h-full">
									<div class="flex flex-col h-full">
										{#if feedback.data?.sibling_model_ids}
											<div class="font-medium text-gray-600 dark:text-gray-400 flex-1">
												{feedback.data?.model_id}
											</div>

											<Tooltip content={feedback.data.sibling_model_ids.join(', ')}>
												<div class=" text-[0.65rem] text-gray-600 dark:text-gray-400 line-clamp-1">
													{#if feedback.data.sibling_model_ids.length > 2}
														<!-- {$i18n.t('and {{COUNT}} more')} -->
														{feedback.data.sibling_model_ids.slice(0, 2).join(', ')}, {$i18n.t(
															'and {{COUNT}} more',
															{ COUNT: feedback.data.sibling_model_ids.length - 2 }
														)}
													{:else}
														{feedback.data.sibling_model_ids.join(', ')}
													{/if}
												</div>
											</Tooltip>
										{:else}
											<div
												class=" text-sm font-medium text-gray-600 dark:text-gray-400 flex-1 py-1.5"
											>
												{feedback.data?.model_id}
											</div>
										{/if}
									</div>
								</div>
							</td>

							{#if feedback?.data?.rating}
								<td class="px-3 py-1 text-right font-medium text-gray-900 dark:text-white w-max">
									<div class=" flex justify-end">
										{#if feedback?.data?.rating.toString() === '1'}
											<Badge type="info" content={$i18n.t('Won')} />
										{:else if feedback?.data?.rating.toString() === '0'}
											<Badge type="muted" content={$i18n.t('Draw')} />
										{:else if feedback?.data?.rating.toString() === '-1'}
											<Badge type="error" content={$i18n.t('Lost')} />
										{/if}
									</div>
								</td>
							{/if}

							<td class=" px-3 py-1 text-right font-medium">
								{dayjs(feedback.updated_at * 1000).fromNow()}
							</td>

							<td class=" px-3 py-1 text-right font-medium" on:click={(e) => e.stopPropagation()}>
								<FeedbackMenu
									on:delete={(e) => {
										deleteFeedbackHandler(feedback.id);
									}}
								>
									<button
										class="self-center w-fit text-sm p-1.5 dark:text-gray-300 dark:hover:text-white hover:bg-black/5 dark:hover:bg-white/5 rounded-xl"
									>
										<EllipsisHorizontal />
									</button>
								</FeedbackMenu>
							</td>
						</tr>
					{/each}
				</tbody>
			</table>
		{/if}
	</div>

	{#if total > 0 && $config?.features?.enable_community_sharing}
		<div class=" flex flex-col justify-end w-full text-right gap-1">
			<div class="line-clamp-1 text-gray-500 text-xs">
				{$i18n.t('Help us create the best community leaderboard by sharing your feedback history!')}
			</div>

			<div class="flex space-x-1 ml-auto">
				<Tooltip
					content={$i18n.t(
						'To protect your privacy, only ratings, model IDs, tags, and metadata are shared from your feedback—your chat logs remain private and are not included.'
					)}
				>
					<button
						class="flex text-xs items-center px-3 py-1.5 rounded-xl bg-gray-50 hover:bg-gray-100 dark:bg-gray-850 dark:hover:bg-gray-800 dark:text-gray-200 transition"
						on:click={async () => {
							shareHandler();
						}}
					>
						<div class=" self-center mr-2 font-medium line-clamp-1">
							{$i18n.t('Share to Open WebUI Community')}
						</div>

						<div class=" self-center">
							<CloudArrowUp className="size-3" strokeWidth="3" />
						</div>
					</button>
				</Tooltip>
			</div>
		</div>
	{/if}

	{#if total > 30}
		<Pagination bind:page count={total} perPage={30} />
	{/if}
{/if}
